public uint CallNtPowerInformation(int InformationLevel, IntPtr lpInputBuffer, int nInputBufferSize, long lpOutputBuffer,
int nOutputBufferSize)
{
return(PowerManagerInterop.CallNtPowerInformation(InformationLevel, lpInputBuffer, nInputBufferSize,
lpOutputBuffer,
nOutputBufferSize));
}
public static Int64 GetLastWakeTime()
{
IntPtr buffer = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(Int64)));
PowerManagerInterop.CallNtPowerInformation(SleepWakeTimeManager.LastWakeTime, IntPtr.Zero, 0, buffer.ToInt64(), Marshal.SizeOf(typeof(Int64)));
return(buffer.ToInt64());
}
public static bool ManageHybernateFile(bool isHybernateFileReserved)
{
IntPtr buffer = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(bool)));
Marshal.WriteInt32(buffer, 0, Convert.ToInt32(isHybernateFileReserved));
bool resultState = false;
PowerManagerInterop.CallNtPowerInformation(SystemReserveHiberFile, buffer, 0, resultState, Marshal.SizeOf(typeof(bool)));
return(resultState);
}
public static byte[] GetSystemPowerInformation()
{
IntPtr buffer = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(PowerManagerInterop.SYSTEM_POWER_LEVEL)));
uint result = PowerManagerInterop.CallNtPowerInformation(SystemPowerInformation, IntPtr.Zero, 0, buffer, Marshal.SizeOf(typeof(PowerManagerInterop.SYSTEM_POWER_LEVEL)));
if (result == STATUS_SUCCESS)
{
PowerManagerInterop.SYSTEM_POWER_LEVEL powerInfo = (PowerManagerInterop.SYSTEM_POWER_LEVEL)Marshal.PtrToStructure(buffer, typeof(PowerManagerInterop.SYSTEM_POWER_LEVEL));
return(powerInfo.Spare);
}
else
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
public static uint GetSystemBatteryState()
{
PowerManagerInterop.SYSTEM_BATTERY_STATE batteryState = new PowerManagerInterop.SYSTEM_BATTERY_STATE();
PowerManagerInterop.CallNtPowerInformation(SystemBatteryState, IntPtr.Zero, 0, batteryState, Marshal.SizeOf(typeof(PowerManagerInterop.SYSTEM_BATTERY_STATE)));
return(batteryState.RemainingCapacity);
}
public static bool Sleep()
{
return(PowerManagerInterop.SetSuspendState(false, false, false));
}
public bool SetSuspendState(bool hibernate, bool forceCritical, bool disableWakeEvent)
{
return(PowerManagerInterop.SetSuspendState(hibernate, forceCritical, disableWakeEvent));
}
